Please look at the picture and answer :)

In the diagram of circle o, what is the measure of zabc?

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons